Countdown co-presenter Rachel Riley was left cringing on Tuesday's show after the F-word popped up on the letter board, report the Sun and Star. Host Jeff Stelling grinned when he noticed that the letters U, D, F, C, K, and E spelled out a six-letter version of the swearword. The contestants prevented any embarassment by opting for the five-letter words "Faced" and "Caged" instead. Meanwhile, the dictionary team picked the seven-letter "Dockage" and "Dogface".